Thread: Postdoctoral Position

Started: 2021-12-13 15:57:46
Last activity: 2021-12-13 15:57:46
Bill Walter
2021-12-13 15:57:46
Institution: Lawrence Livermore National Laboratory
Open Until: 2022-01-31

The Seismology Group at LLNL has an opening for a postdoctoral staff member to do original and independent research to support the Source Physics Experiment (SPE) and other Geophysical Monitoring Programs (GMP). We are seeking an individual with quantitative skills and experience in analyzing and modeling geophysical data from various types of seismic sources. The applicant will work on all aspects of the Source Physics Experiment (SPE) Phase III, also known as the Rock Valley Direct Comparison (RV/DC) Experiment. An aspect of RV/DC includes plans to detonate a small chemical explosion at the hypocenter of a prior shallow earthquake and record the data on common stations. This will also allow for investigation of in situ earthquake properties of a less mature fault than prior fault drilling efforts. A focus of RV/DC is to improve our understanding of the physics underlying signature differences between explosions and shallow earthquakes. The applicant will also work with the broader GMP team and its extensive seismic research and software databases. This position will report to the Seismology group leader and the RV/DC and GMP Program Leaders. This position is in the Seismology Group within the Atmospheric, Earth, and Energy Division (AEED) in the Physical and Life Sciences (PLS) Directorate.
Essential Duties
- Conduct original and independent research, in collaboration with other LLNL researchers into improving our understanding of earthquakes and explosions, with the goal of improving capabilities to discriminate between seismic source types.
- Assist in the development, validation, and application of physics-based seismic source models of explosions and earthquakes, and their use in analyzing data as well as predicting signatures from future events.
- Assist in the sensor network design, signature collection and analysis of seismic and geophysical data from the RV/DC experiment and other relevant explosion and earthquake experiments, including legacy nuclear explosion data.
- Explore new technologies and data analysis techniques that may improve the ability to detect, locate, identify, and characterize explosions in a background of natural earthquakes and other seismic sources.
- Present research at meetings, as well as write, illustrate, and publish results in peer reviewed journals.
- Work as part of a scientific team and interact with GMP and other researchers to design and implement research projects, while coordinating program requirements and deliverables for sponsors, including program reviews and technical reports.
- Interact with sponsors, customers, partners, and data providers including universities, U.S. government agencies, national laboratories, foreign data providers, consortia, and international organizations (e.g. CTBTO).
- Travel to assist with experiment execution, data collection, to interact with collaborators, sponsors and research customers and to present results at scientific meetings.
- Perform other duties as assigned.

- Recent Ph.D. in seismology, geophysics or associated field.
- Demonstrated creativity, ability and knowledge in quantitative seismology.
- Experience in collecting, processing and analyzing local/regional seismic data, including forward or inverse modeling.
- Proficiency in organizing and analyzing large databases of waveforms, events, amplitudes, and arrivals for performing quantitative analyses.
- Familiarity with seismological and geophysical methods for characterizing the subsurface.
- Demonstrated programming skills (e.g. Java, C/C++, and/or Python), and experience with heterogeneous computing environments (Mac or PC, UNIX or LINUX platforms).
- Demonstrated ability to interact effectively with a team of interdisciplinary scientists having different backgrounds.
- Proficient verbal and written communication skills necessary to effectively collaborate in a team environment and present, explain and publish technical information.

Desired Qualifications
- Research experience in technologies for monitoring explosions or earthquakes or other seismic sources.
- Experience in deploying geophysics sensors and systems in the field, and processing the data collected, or analyzing geophysical field data.
- Experience in utilizing fiber optic (DAS) and/or other borehole sensor data.

Anticipated Clearance:
Q (Position will be cleared to this level). Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing. If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.

Apply by completing the application at :

For more information about the position please contact Bill Walter (walter5<at>
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